The series of images were captioned: “Happy Birthday to HRH The Duchess of Cambridge!” Charles and Camilla’s residence, Clarence House, also wished the Duchess a happy birthday with a number of images.

The caption read: “Wishing HRH The Duchess of Cambridge a very Happy Birthday.” It also included a sweet birthday cake emoji.

William, Kate, Prince Harry and his wife Duchess Meghan’s shared account, Kensington Palace, also took note of the special day. They thanked fans for their messages, “Thank you everyone for all your lovely messages on The Duchess of Cambridge’s birthday!”

On her birthday, Kate stayed home while her husband visited the Royal London Hospital. The children noted her special day by presenting William with a homemade birthday card to give his wife.

William was at the Royal London Hospital in Whitechapel, East London, to mark the 30th anniversary of the London Air Ambulance service. He later went home to celebrate his wife’s birthday with their three children George, Charlotte, and Louis.